WO2018073653A1 - Procédés et systèmes permettant de fabriquer un écran de projection arrière et une configuration permettant d'afficher un hologramme 3d simulé - Google Patents

Procédés et systèmes permettant de fabriquer un écran de projection arrière et une configuration permettant d'afficher un hologramme 3d simulé Download PDF

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Publication number
WO2018073653A1
WO2018073653A1 PCT/IB2017/051508 IB2017051508W WO2018073653A1 WO 2018073653 A1 WO2018073653 A1 WO 2018073653A1 IB 2017051508 W IB2017051508 W IB 2017051508W WO 2018073653 A1 WO2018073653 A1 WO 2018073653A1
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WO
WIPO (PCT)
Prior art keywords
image
screen
image data
rear projection
program material
Prior art date
Application number
PCT/IB2017/051508
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English (en)
Inventor
John Paul Duffy
Original Assignee
John Paul Duffy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by John Paul Duffy filed Critical John Paul Duffy
Publication of WO2018073653A1 publication Critical patent/WO2018073653A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
    • G02B30/52—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels the 3D volume being constructed from a stack or sequence of 2D planes, e.g. depth sampling systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/604—Polarised screens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/606—Projection screens characterised by the nature of the surface for relief projection
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/363—Image reproducers using image projection screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/388—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume
    • H04N13/395—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3147—Multi-projection systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof

Definitions

  • This invention relates to projection apparatus, and in particular the invention relates to a projection apparatus which is used in a manner so that a viewer will see a video presentation which comprises a simulated three dimensional (3D) image.
  • the 3D video may be projected utilizing a front projector and two screens, where the front screen may be a rear-projecting screen and a background screen which may contain a further image which varies in a
  • Pepper's ghost a theatrical illusion which is widely known as "Pepper's ghost".
  • a viewer is made to believe that he is seeing an article which does not, in fact, exist in the setting or circumstances being viewed.
  • the techniques involved in presenting Pepper's ghost are described hereafter. However, for now, a brief description and history of Pepper's ghost is provided.
  • the images appear to be three dimensional and demonstrate a parallax effect with respect to other items on the stage.
  • a polymeric film drawn tight within a metal frame, is used to replace the glass panel, and a projection device is used to create the image to be displayed on the polymeric film.
  • a projection apparatus which requires a first projection device that is arranged to generate a virtual three dimensional object by projection of the image onto to a reflected/translucent polymer film.
  • a second projection device projects a background image; and a light source projects light onto the virtual three dimensional image.
  • a stage arrangement may also be provided, which is placed behind the screen, upon which a presenter or actor, or a prop, or both, may be located, in order that the presenter or prop, interact with the virtual image.
  • the polymeric film or glass panel showing the reflection is replaced by a transparent front display device, such as an transparent LCD display device.
  • a transparent front display device such as an transparent LCD display device.
  • the reflective surface with its projected image is no longer required since the virtual image may be displayed directly on the transparent front display.
  • a background display device is positioned visually behind the transparent front display, and a background image is shown or projected directly on the background display device.
  • the images shown on the background display device may be coordinated with the images on the transparent front display in order to create an apparent parallax effect which provides images which are similar to images from the Pepper's ghost technique.
  • An object of the invention is to provide new and improved methods and systems for generating and utilizing a rear-projection screen with a polarized film attached for displaying simulated 3D display images.
  • a method for displaying a simulated 3D image to an audience may comprise attaching a first linear polarization lens with an east-west polarization to a first front projector and attaching a second linear polarization lens with a north-south polarization to a second front projector.
  • the method may further comprise creating a front screen, which is a rear-projecting screen, wherein the creating the front screen comprises, hanging a stretched out gauze vertically, applying at least a first fire resistant coating on the stretched out gauze and drying the first fire resistant coating, applying, using spray application, three semi-translucent diffusing coatings, wherein each of the three semi translucent diffusing coatings are applied at intervals of thirty minutes, and applying at least a second first resistant coating on the three semi-translucent diffusing coatings.
  • the method may further include attaching a polarized film with a north-south polarization to the front screen, wherein the polarized film is the same size as the front screen, and placing a background screen directly behind the front screen, projecting first image data using the first front projector and projecting second image data using the second front projector, wherein interrelation of the first data and the second data image leads to an apparent parallax effect and display of a simulated 3D image.
  • a simulated three-dimensional display device for displaying a hologram.
  • the display device may comprise a first linear polarization lens with an east-west polarization attached to a first front projector, a second linear polarization lens with a north-south polarization attached to a second front projector, a front screen, which is a rear-projecting screen, attached to a polarized film with a north-south polarization, where front screen includes a stretched out gauze vertically, a first fire resistant coating directly on the stretched out gauze, three semi-translucent diffusing coatings, and a second first resistant coating on the three semi-translucent diffusing coatings, and a background screen directly behind the front screen, where the first front projector is configured to project first image data and the second front projector is configured to project second image data, wherein interrelation of the first data and the second data image leads to an apparent parallax effect and display of a simulated 3D image.
  • Figure 1 is a sketch showing the general layout and functioning principles of a prior art Pepper's ghost installation
  • Figure 2 displays an exemplary environment where a front projector placed from the perspective of an audience and a rear projection screen as a front screen are utilized, consistent with exemplary embodiments of the present disclosure
  • Figure 3 displays an exemplary scenario, utilizing two projectors each with polarization lens attached places next to each other, consistent with exemplary embodiments of the present disclosure
  • Figure 4 displays a detailed view of rear projection screen (front screen), consistent with exemplary embodiments of the present disclosure
  • Figure 5 illustrates an exemplary method for displaying a simulated 3D image to an audience, consistent with exemplar embodiments of the present disclosure
  • Figure 6 illustrates an exemplary method for creating a front screen which is a rear-projecting screen, consistent with exemplary embodiments of the present disclosure.
  • the phrase "configured to” encompasses any way that any kind of functionality can be constructed to perform an identified operation.
  • the functionality can be configured to perform an operation using, for instance, software, hardware, firmware and the like, or any combinations thereof.
  • ком ⁇ онент As utilized herein, terms “component,” “system,” “client” and the like are intended to refer to a computer-related entity, either hardware, software (e.g., in execution), and/or firmware, or a combination thereof.
  • a component can be a process running on a processor, an object, an executable, a program, a function, a library, a subroutine, and/or a computer or a combination of software and hardware.
  • both an application running on a server and the server can be a component.
  • One or more components can reside within a process and a component can be localized on one computer and/or distributed between two or more computers.
  • the term "processor” is generally understood to refer to a hardware component, such as a processing unit of a computer system.
  • the claimed subject matter may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques to produce software, firmware, hardware, or any combination thereof to control a computer to implement the disclosed subject matter.
  • article of manufacture as used herein is intended to encompass a computer program accessible from any non-transitory computer-readable device, or media.
  • Non-transitory computer-readable storage media can include but are not limited to magnetic storage devices (e.g., hard disk, floppy disk, and magnetic strips, among others), optical disks (e.g., compact disk (CD), and digital versatile disk (DVD), among others), smart cards, and flash memory devices (e.g., card, stick, and key drive, among others).
  • computer-readable media generally (i.e., not necessarily storage media) may additionally include communication media such as transmission media for wireless signals and the like.
  • the term "the three dimensional (3D) image” or "3D image” may be an actual 3D image or may be an illusion of a 3D image that is created based on generation and display of a two- dimensional (2D) image.
  • the illusion may be created by creating a parallax effect between a front screen and a background screen.
  • the display content between the front screen and back screen may be synchronized.
  • a viewer may experience that a 3D image is being displayed between the two screens.
  • FIG. 1 is a sketch showing a classic arrangement by which the Pepper's ghost illusion was exhibited starting in the last half of the 19th century.
  • a stage typically a proscenium stage, is shown at 12 in Figure 1 , and has a proscenium 14.
  • the left hand side of the stage is open; that is, there is no wall, wing drapery, or the like.
  • a viewer looking at the stage 12 in the direction of arrow 16 sees nothing of the apparatus and setup at the left-hand side of the stage 18.
  • all of the structure at the left-hand side of the stage commonly referred to as a Blue Room 18 (although it is usually black), is kept dark. That is, there is no illumination in the blue room 18, and the stage 20 is typically brightly lit.
  • a glass panel 22 is set at an angle to the viewing direction 16. Whatever is behind the glass 22 is clearly seen by the viewer.
  • Objects 24 and 26 are placed in the blue room 18. When illumination is turned on in blue room 18, a reflection of what is in the blue room 18 is seen in the glass 22, but appears to provide a virtual image 24A and 26A, which can be seen by the viewer. When the lighting in the blue room 18 is discontinued, the images 24A and 26A, appear to disappear.
  • the present system is a variation of the Pepper's ghost illusion wherein a front image is provided on a front screen, and can be made to be interrelated to images appearing on a background screen. This creates parallax in the system, which provides a simulated 3D effect.
  • the present system utilizes a novel method of manufacturing the front screen, which is a rear projection screen, along with a method of projecting image data which leads to a cheaper and more efficient way to display simulated 3D images.
  • the rear projection screen is manufactured as explained below in the explanation provided for Figure 4.
  • Exemplary embodiments of the present disclosure also use polarized lens and a polarized film as described below with respect to Figures 2 and 3 to provide this unique and novel setup which creates better image quality and eliminates spill.
  • Figure 2 displays an exemplary environment where a front projector is placed from a perspective of an exemplary audience and a rear projection screen as a front screen are utilized, consistent with exemplary embodiments of the present disclosure.
  • Figure 2 displays environment 200 that includes projector 202 with projection lens 204.
  • a video image may be projected by projector 202.
  • Project 202 may be mounted or placed in front of an exemplary display screen or screens on the audience side of a venue, room or location.
  • Linear polarization lens 206 may be placed in front of projection lens 204 through which any images would be projected onto an exemplary screen.
  • linear polarization lens 206 may have a x-axis orientation, that is, it may have an east-west polarization.
  • linear polarization lens 206 may comprise of glass or acrylic.
  • Linear polarization lens 206 may be attached to projector 202 and/or lens 204 using an exemplary mount (not illustrated).
  • the mount may be attached in a manner that the lens are rotatable in order to change the alignment of the linear polarization axis relative to the rear projection screen 210 (front screen) and the linear polarized film 212 behind the front screen.
  • the mount may also be used to adjust a distance between linear polarization lens 206 and lens 204 of projector 202.
  • linear polarization lens may be mounts on to lens 204.
  • linear polarization lens 206 may be placed at a maximum distance from the projector such that the entire projected image is projected through the polarized lens. That is to say that no part of a projected image bleeds beyond linear polarization lens 206, in which case parts of the projected image would not be polarized.
  • linear polarization lens 206 are mounted on custom built aluminium frame which allows the lens to be rotated to optimize the polarization effect lens without being directly attached to projector 202 or lens 204.
  • Any images from projector 202 may be displayed on rear projection screen 210 to which is attached linear polarized film 1412. Accordingly, in exemplary embodiments, a video image/light exits the polarization lens 206 with the light eliminated on one axis (the y-axis) leading for the image to remain intact and undistorted as it hits rear projection screen 210.
  • rear projection screen 210 may be a nylon tulle material that is treated with fire retardant, an optical optimizing paint and finally a second application of fire retardant, as explained below in further detail with respect to Figure 4.
  • Rear projection screen 210 reflects the image back to the audience and also allows transmission of the video image through the surface. This transmitted polarized image/light is then transmitted to linear polarized film 212 behind rear projection screen 210.
  • polarized film 212 may have a y-axis orientation, that is, it may have a north-south polarization.
  • linear polarized film 212 is constructed and oriented such that the axis of polarization is 90 degrees to the polarization orientation of linear polarized lens 206 mounted on projector 202.
  • Stand 216 may hold up rear projection screen 210 with polarized film 212.
  • Polarized film 212 may be the same size as rear projection screen 210.
  • polarized film 212 is tensioned on stand 214 to create a smooth, flat surface, which is parallel to rear projection screen 210 (front screen). Therefore, when light or the video image that has passed through linear polarization lens 206 and rear projection screen 210 hits polarized film 212, it is polarized on the remaining axis thus eliminating any light exiting the polarized film and thereby solving the issue of spill.
  • any image/light or video data projected by projector 202 through linear polarization lens 206 has only allows image data along the x-axis to pass through become of the polarization orientation of linear polarization lens 206. Subsequently, due to the y-axis polarization orientation of polarized film 212, the remaining image data along the x-axis is blocked from being passed through preventing spill.
  • Stand 218 may hold up rear projection plane 214.
  • rear projection plane 214 may be drapery, a screen, or any other similar surface.
  • a rear projector (not illustrated) may also be placed between rear projection screen 210 and rear projection plane to project a video image to be displayed on rear projection plane 214.
  • Rear projection plane 214 may reflect the image from the second projector (not illustrated) back through the rear projection screen 210 and polarized film 212.
  • rear projection plane 214 may extend beyond rear projection screen 210. The size may be dependent based on an audience cone which includes audience viewing angle, distance between rear projection screen 210 and rear projection plane 214, and geometry of a venue.
  • first program material is projected by a first projector to be displayed on exemplary front screen (rear projection screen 210) and second program material are projected by a second projector to be displayed on exemplar back screen (rear projection plane).
  • the first program material and the second program material may be edited and synchronized one with the other so that the images from the back screen appear to be interrelated to, or merge into, the program material on the front screen, and thus provide a simulated 3D viewing experience.
  • the images of the first program material and the images of the second program material may be independent. However, in keeping with the present invention, preferably the images of the first program material and the images of the second program material are synchronized. Typically,
  • synchronization of the first program material and the second material is preferably under the control of a computer, or some other computerized device.
  • the apparatus of the present invention is preferably arranged so that images from the first program material and/or the second program material are altered or edited, in such a manner so that any chosen image from first program material displayed on the front screen, will create an image which will appear to be aligned with an area of the second program material presented on the back screen.
  • the first program material will appear to be
  • the second program material may be altered so that no image is provided in the area behind the image provided in the first program material.
  • the first program material image is provided without any image from the second program material being superimposed on, or under, the first program image.
  • the editing and placement of the first program material image and the edited area of the second program material image are such that the chosen image of the first program material and the edited area of the second program material may be made to move in any direction, relative one to the other, from frame to frame of the virtual image and the second program material image.
  • the directions of movement from frame to frame of the virtual image, and the edited area of the second program material image can be in opposite directions, so as to provide an enhanced illusion of movement one with respect to the other.
  • Figure 3 displays an exemplary scenario, utilizing two projectors each with polarization lens attached places next to each other, consistent with exemplary embodiments of the present disclosure.
  • environment 300 contains all the elements of environment 200 of Figure 2 and also includes a second rear projector 302 with lens 304 is placed next to projector 202.
  • the second rear projector 302 may be utilized to project videos or image data to be displayed on rear projection plane 214.
  • a linear polarization lens 306 may be attached to projector 302, analogously to how linear polarization lens 206 may be attached to projector 202, with similar ability to vary angles.
  • Linear polarization lens 306 may have a y- axis orientation, that is, it may have a north-south polarization.
  • first program material may be displayed on rear projection screen 210 and second program material may be displayed on rear projection plane 214, displaying a simulated 3D image as discussed above.
  • FIG. 4 displays a detailed view of the front screen 210 (rear projection screen), consistent with exemplary embodiments of the present disclosure.
  • Gauze 404 may contain border 402.
  • Border 402 may comprise of a velcro attachment strip around the entire border of gauze 404.
  • Border 402 may be utilized for mounting and tensioning front screen 210.
  • the illustrations 406, 408 and 410 are all liquid applications applied to the gauze with a spray gun. Each layer is applied sequentially after the previous layer has dried and cured. Specifically, when utilized, front screen 210 should be stretched out flat for most efficient performance.
  • fire resistant 406 may be applied using spray application.
  • coating 408 may be applied behind fire resistant 406.
  • Coating 408 may be a semi- translucent diffusing coating.
  • Coating 408 may have a gloss of 15, an ideal spreading rate of 302.4 sq ft/gal, with a recommended film thickness of 1.5 Mils Wet and 0.50 Mils Dry.
  • gauze 404 or a similar fabric
  • a thin coat may be applied three times with about half an hour allotted between coats to allow for it to dry.
  • three coats create the ideal combination of transparency and signal penetration-less than two coats leads to negative impact on video appearance by making it looked soft while any additional coating, there is impact on the quality of viewing any images on any back screen or plane.
  • coating 308 may also be applied using spray application.
  • an exemplary spray gun may be set to allow a high amount of air to into the mixture creating a misting of coating 308 onto gauze 404.
  • the exemplary spray gun may be used to spray at an angle and not at a ninety degrees or perpendicular angle to gauze 404.
  • Coating 408 may be applied by using a sweeping motion, with the exemplary spray gun positioned about 0.75 to 1.25 feet away from gauze 404 first in a horizontal direction and then in the vertical direction.
  • first coating 406 may be applied followed by coating 408 that may be a semi-translucent diffusing coating, followed by final coating 410 of fire retardant.
  • Each application of coatings 406, 408 and 410 require a minimum of 3 hours to dry.
  • Another layer of fire resistant 410 may be applied behind coating 408 using spray application.
  • fire resistant 410 may be similar to fire resistant 306.
  • Figure 5 illustrates an exemplary method for displaying a simulated 3D image to an audience, consistent with exemplar embodiments of the present disclosure.
  • Method 500 may include one or more steps as described above with regards to the description of Figures 2 through 5.
  • step 502 may comprise attaching a first linear polarization lens with an east-west polarization to a first front projector.
  • linear polarization lens 206 may be attached to project 202.
  • Step 504 may comprise 504 attaching a second linear polarization lens with a north-south polarization to a second front projector.
  • linear polarization lens 306 may be attached to project 302.
  • respective linear polarizations lens 206 and 306 may simply be placed in front of respective projectors 202 and 30 using stand-alone stands.
  • Step 506 may comprise of creating a front screen, which is a rear- projecting screen.
  • Figure 6 illustrates an exemplary method for creating a front screen which is a rear projection screen, consistent with exemplary embodiments of the present disclosure. Therefore, step 506, may comprise of a first step 602 which comprises hanging a stretched out gauze vertically.
  • Step 604 may comprise of applying at least a first fire resistant coating on the stretched out gauze and drying the first fire resistant coatings.
  • Step 606 may comprise of applying, using spray application, three semi-translucent diffusing coatings, wherein each of the three semi translucent diffusing coatings are applied at intervals of thirty minutes.
  • Step 608 may comprise of applying at least a second first resistant coating on the three semi- translucent diffusing coatings.
  • Step 508 may comprise of attaching a polarized film with a north- south polarization to the front screen, wherein the polarized film is the same size as the front screen.
  • polarized film 212 may be attached to rear projecting screen 210.
  • Step 510 may comprise of placing a background screen directly behind the front screen.
  • rear projection plane 214 may be placed behind an exemplary front screen.
  • Step 512 may comprise of projecting first image data using the first front projector and projecting second image data using the second front projector, wherein interrelation of the first data and the second data image leads to an apparent parallax effect and display of a simulated 3D image.
  • Other modifications and alterations may be used in the design and manufacture of the apparatus of the present invention without departing from the spirit and scope of the accompanying claims.
  • substantially planar when used with an adjective or adverb is intended to enhance the scope of the particular characteristic; e.g., substantially planar is intended to mean planar, nearly planar and/or exhibiting characteristics associated with a planar element. Further use of relative terms such as “vertical”, “horizontal”, “up”, “down”, and “side-to-side” are used in a relative sense to the normal orientation of the apparatus.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

L'invention concerne un procédé et une structure pour afficher une image 3D simulée qui peut être projetée à l'aide de projecteurs avant et de deux écrans, l'écran avant pouvant être un écran de projection arrière avec un film de polarisation linéaire fixé et un écran d'arrière-plan qui peut contenir une autre image qui varie d'une manière programmée en conservant les actions qui sont représentées par des images sur l'écran avant.
PCT/IB2017/051508 2016-10-19 2017-03-15 Procédés et systèmes permettant de fabriquer un écran de projection arrière et une configuration permettant d'afficher un hologramme 3d simulé WO2018073653A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/297,317 US9658462B1 (en) 2016-10-19 2016-10-19 Methods and systems for manufacturing a rear projection screen and a setup for displaying a simulated 3D hologram
US15/297,317 2016-10-19

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WO2018073653A1 true WO2018073653A1 (fr) 2018-04-26

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CN110275310B (zh) * 2019-07-15 2022-06-24 合肥工业大学 一种正投影式三维显示装置及三维显示系统

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US9658462B1 (en) * 2016-10-19 2017-05-23 Arht Media Inc. Methods and systems for manufacturing a rear projection screen and a setup for displaying a simulated 3D hologram
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CN112085975B (zh) * 2020-09-16 2022-09-23 联想(北京)有限公司 一种显示设备及显示方法
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